Button-fly stay.



B. F. OHAMBERLIN, J11- BUTTON PLY STAY 'ABPLIGATIQN FILED AUG.9,1912.

1,044, 1 I Patented Nov. 12, 191.2.

@637266666: WQM

COLUMBIA PLANOGRAPH C0..WASH1NOTON, D. c.

customary in BENJAMIN FRANKLIN GHAMBERLIN, JR., OF BOSTON,MASSACEUSETTS, ASSIGNOR TO WALPOLE SHOE SUPPLY COMPANY, OF MAINE.

OF BOSTON, MASSACHUSETTS, A CORPORATION BUTTON-FLY STAY.

Specification of Letters Patent.

Patented Nov. 12,1912.

Application filed August 9, 1912. Serial No. 714,206.

To all whom it may concern.

Be it known that l, BENJAMIN FRANKLIN lHAMBnRLIN, Jr., a citizen of theUnited States, residing at 19 Nightingale street, in the city of Boston,county of Suffolk, and State of Massachusetts, have invented a new anduseful Improvement in Button-Fly Stays, of which the following is aspecification.

The present invention relates to the manufacture of boots and. shoes andmore particularly to button-fly stays.

As well known to those skilled in the art the front edge of a button-flyis liable to curl up and the button-hole eyes formed in the fly areliable to tear outwardly to the front edge of the fly. Heretofore it hasbeen the manufacture of boots and shoes to reinforce the button-flies byinterposing a narrow strip of tape between the two faces of the fly, thestrip being secured to the marginal portion of the fly between its edgeand the button holes by cement or stitches. This manner of reinforcingthe fly is unsatisfactory as it has been found that the narrow strip oftape does not provide the necessary strength to the buttonholes toprevent their tearing out. It has been proposed heretofore to reinforcebutton-flies by interposing between the faces of the fly a staysufficiently wide to cover the buttonholes throughout their length andprovided with a strengthening rod arranged to reinforce the marginalportion of the fly between the edge of the fly and the buttonholes. Thismanner of reinforcing the fly is impracticable. Owing to the fact that abutton-fly is curved longitudinally it has been found difficult to applya wide strip of tape to the fly because of the necessity of plaiting thetape in order to cause it to follow the curve of the fly. Furthermore,the provision of a strengthening rod is expensive as it involves anadditional stitching operation in order to secure the rod to the stay.

The object of the present invention is to provide shoe manufacturerswith a buttonfly stay by which the margin of button-flies and the wallsof the buttonholes formed therein may be effectively reinforced withoutdanger of forming objectionable plaits in the stay and which may besecured in position on the fly without the use of cement or stitches.

To the accomplishment of this object a feature of the inventioncontemplates the provlslon of a button-fly stay consisting of astrip ofadhesive tape having a longitudinal edge folded over upon and adherentlysecured to the adjacent marginal portion of the tape.

In its broader aspects the invention contemplates the attachment of thetape to the button-fly in any suitable or desirable manner, but in orderto effectively reinforce the fly the tape is applied to the fly so thatthe folded edge and body portion of the tape respectively reinforce thebutton-fly in front of the buttonholes and the walls of the buttonholes.This manner of applying the tape forms an important feature of theinvention.

The various features of the present invention will be best understoodfrom an inspection of the accompanying drawings illustrating thepreferred embodiment of the inven tion, in which Figure 1 is afragmentary plan of a button-fly showing the stay secured thereto, andFig. 2 is a fragmentary plan of the button fly stay as furnished to theshoe manufacturers.

The button-fly stay consists of a strip of textile tape 1 having itslongitudinal edges curved to conform to the longitudinal curve of abutton-fly. The tape 1 is coated upon one face 2 with some suitablematerial which is normally non adhesive under ordinary conditions oftemperature but which may be rendered adhesive by the application ofheat. The edge of the tape corresponding to the front edge of thebutton-fly is provided with a fold 3 which is secured to the adjacentmarginal portion of the tape by the adhesive coating on the contactingsurfaces. Preferably the coated tape is supplied to the trade in a stripof considerable length so that the individual button-fiy stays may becut therefrom in lengths to suit the requirements of the shoemanufacturers.

In use the coated face 2 of the strip 1 is placed against the lower faceof the layer 4 of the button-fly the upper face of which is exposed inthe finished shoe. The strip is applied to the layer 4: so that the fold3 is located a short distance from the front edge 5 of the layer 4|: andparallel thereto, the curved formation of the strip permitting theapplication of the strip to the layer a in the manner described withoutplaits or folds. The strip 1 is then secured to the layer 4 bystitches 7in the usual manner.

art that the fold 3 reinf the application of'heat or heat and pressurein any suitable manner. The lower layer of the button-fly is shown at 6and this layer is then secured to the layer 4 by a line of The buttonflyis then provided with the usual buttonholes 8 by cutting holes throughthe layers 4 and 6 and the interposed strip 1 and the buttonholes arethen worked in the usual manner.

It will be apparent to those skilled in the orces the marginal portionof the button-fly in advance of the buttonholes and that the bodyportion of the tape 1 thickens and strengthens the Walls of thebuttonholes. As the improved buttonfly stay may be applied to the flywithout the use of either cement or stitches it is obvious that animportant economy in the manufaeture of shoes is effected. It will alsobe apparent to those skilled in the art that it is immaterial whetherthe adhesive coating eX- tends entirely across the face of the tapebefore it is folded or extends from the folded edge, beneath the fold,to the unfolded edge as the sole purpose of the coating is to secure thefold to the body portion of the tape and the tape to the button-fly.

What is claimed as new is 1. A button-fly stay consisting of a strip oftape provided with an adhesive coating upon substantially the entiresurface of one face of the tape and having a curved longitudinal edgefolded over upon and adher- Z ently secured to the adjacent marginalportion of the tape, substantially as described.

2. A button-fly consisting of layers of material having registeringbuttonholes formed therein and a stay with an adhesive coatinginterposed between the said layers and secured to one of said layers bythe adhesive coating and having a longitudinal edge folded over upon andadherently secured to the adjacent margin of the body portion of thestay, said folded edge and body portion being arranged respectively toreinforce the button-fly in front of the buttonholes and the walls ofthe buttonholes, substantially as described.

3. As an article of manufacture, a button-fly stay consisting of a stripof textile material provided upon substantially the entire surface ofone face with an adhesive coating normally non-adhesive under ordinaryconditions of temperature and having a narrow fold extending along onelongitudinal edge which is secured to the body portion of the strip bythe adhesive coating, substantially as described.

BENJAMIN FRANKLIN CHAMBERLIN, JR.

lVitnesses:

GRACE A. Dnvnn, CHARLES W. MoDnRMoTr.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). G.

